A cuticle-degrading protease (CDEP-1) of Beauveria bassiana enhances virulence
A cuticle-degrading protease (CDEP-1) of Beauveria bassiana enhances virulence
复制标题
白僵菌的角质层降解蛋白酶 (CDEP-1) 增强毒力
DOI:
10.1080/09583150802082239
复制
发表时间:
2008-01
影响因子:
1.4
通讯作者:
Xing-Yong Yang
中科院分区:
文献类型:
--
作者:
Di Wu;Yan-Hua Fan;Zhi-Bing Luo;Ming-Guang Feng;Yan Pei;Yong-Jun Zhang;Xing-Yong Yang
Abstract In order to investigate virulence enhancement of entomopathogenic fungi, a Beauveria bassiana-sourced Pr1 protease (CDEP-1) was expressed by a methylotrophic yeast Pichia pastoris and then used as an additive to three gradient sprays of B. bassiana strain (Bb0062) onto apterous green peach aphid Myzus persicae adults in six bioassays. The resultant data fit well to a time–concentration–mortality model. Generally, the LC50 estimates of the fungal pathogen against the aphid species decreased with increasing CDEP-1 concentrations from 0 to 100 µg mL−1. The LC50s on days 5–7 after spray were reduced by 1.5–2.5-fold at the concentrations of 20–100 µg mL−1. However, sprays of 20–100 µg CDEP-1 mL−1 aqueous solution alone had no significant effect on aphid mortality compared to water spray only. Neither did inclusion of inactivated CDEP-1 at a concentration of 50 µg mL−1 affect significantly the fungal virulence to aphids. Our results confirm for the first time that the cuticle-degrading protease CDEP-1 enhanced fungal virulence due to acceleration of conidial germination and cuticle penetration. This suggests a new approach to utilising the protease in microbial control.
登录
查看更多内容
影响因子:
3.4
作者:
BIDOCHKA, MJ;KHACHATOURIANS, GG
通讯作者:
KHACHATOURIANS, GG
影响因子:
2.6
作者:
Ye, SD;Dun, YH;Feng, MG
通讯作者:
Feng, MG
影响因子:
1.9
作者:
Liande Wang;Jian Huang;Minsheng You;B. Liu
通讯作者:
Liande Wang;Jian Huang;Minsheng You;B. Liu
影响因子:
3.9
作者:
R. S. St. Leger;R. Cooper;A. Charnley
通讯作者:
R. S. St. Leger;R. Cooper;A. Charnley
影响因子:
3.4
作者:
Nowierski, RM;Zeng, Z;Swearingen, W
通讯作者:
Swearingen, W